Jang Geun Suk was the son of Kim Bo Yeon.

In the thirteenth episode of KBS 2TV Wednesday Thursday drama "Pretty Boy," which aired on January 1, 2014, the subject of the secret of Dokko Matte's (Jang Geun Suk) birth rose on the surface. On this day's episode, Ki Suk (Dokko Young Jae) introduced his son David (Lee Jang Woo) to Moon Soo (Kim Young Jae). At this meeting, David revealed that he has no interest in taking over his father's business. At the same time, Dokko Matte got together with Na Hong Ran (Kim Bo Yeon). At thir meeting, Na Hong Ran tried persuading Dokko Matte to be on her side, planning to take over the land he would inherit. However, at the end of the episode, Dokko Matte realized that he was the son of Na Hong Ran, who has always treated him like a piece of trash, and freaked out.